利用固体氧化物电解池进行NO脱除研究，考察了电解池材料与结构及操作条件对NO脱除效果的影响。实验结果表明，相比氧化钇稳定氧化锆（YSZ），以钆掺杂氧化铈（GDC）为电解质材料制备的电解池反应温度区间降低并且NO去除率提高；阴极材料掺杂Co元素后，电解池NO去除率在350℃和550℃下分别提高约8%、3%；7层电池结构电解池相比3层和5层电池结构电解池，在450℃下NO去除率分别提高15%和9%；经KNO₃溶液浸渍后的电解池，其NO去除率在450℃下提高了23%；通过改变反应条件可知，在一定范围内NO去除率随电流密度的增大而提高；NO与O₂呈竞争吸附关系，O₂浓度的增加不利于NO的去除。

NO removal is studied by solid oxides electrolysis cell (SOEC).The influences of the electrolytic cell's materials and structure,and operation conditions on the effect of NO removal in SOEC are investigated.The experimental results show that the electrolysis cell prepared by using gadolinium doped cerium oxide (GDC) as electrolyte materials has lower reaction temperature range and better denitrification effect compared with that using yttria-stabilized zirconia (YSZ) as electrolyte material.After cathode material of SOEC is doped with Co,the NO removal rate by SOEC increases 8% and 3% respectively at 350℃ and 550℃.The NO removal rate by the SOEC with 7 stack layers configuration can lift 15% and 9% compared to the SOEC with 3 and 5 stack layers configuration,respectively at 450℃.The NO removal rate by the SOEC that has been immersed in KNO₃ solution enhances 23% at 450℃.Through varying reaction conditions,the NO removal rate will increase when the electricity density increases in a constant range.A competitive adsorption relationship exists between O₂ and NO,hence the increase of oxygen concentration is bad for the removal of NO.

储超(1993-),男,硕士生,主要从事烟气脱硝研究,chuchao1993@163.com